Nervous System Exam Questions

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• [GET] Nervous System Exam Questions | updated!

  View more. University of South Australia. Answer the following questions and then press 'Submit' to get your score. Question 1 The vagus nerve regulates major elements of which part of the nervous system?

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• [FREE] Nervous System Exam Questions | latest

  Axon hillock Explanation: The axon hillock is located near the boundary of the cell body and the beginning of the axon. This region is where the totality of incoming nervous signals onto a single cell are summed, and only if this sum meets the...

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• Nervous System Practice Test Questions

  Recall that active transport involves movement of molecules against their electrochemical gradient. This means that the sodium and potassium ions are moved against their gradients. Since they are moving against their gradients, sodium and potassium ions must move from a region of low concentration to a region of high concentration. The question states that sodium ions are moving from the inside to the outside of the cell; therefore, there must be a higher concentration of sodium ions outside the cell than inside the cell. Report an Error Example Question 4 : Neurons And Action Potential In humans, nerve impulses are transmitted with the coordinated action of sodium and potassium ion channels. These channels open in a specific sequence, to allow for membrane potential changes to take place in a directional manner along the length of an axon. Figure 1 depicts a single phospholipid layer of a cell membrane, and three transmembrane channels important to action potential propagation.

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• MCAT Biology : Nervous System And Nervous Tissue

  The cell body associated with the axon depicted in Figure 1 takes in neural impulses from a variety of other neurons. Possible Answers: called a dendrite, and is always myelinated by oligodendrocytes called a dendrite, and uses ions different from the sodium and potassium used by axons to conduct signals called a dendrite, and a neuron always has only one dendrite and one axon called a dendrite, and is always myelinated by Schwann cells called a dendrite, and is often present in greater numbers on a single cell than the single axon Correct answer: called a dendrite, and is often present in greater numbers on a single cell than the single axon Explanation: A dendrite carries electrical signals into the cell body of a neuron.

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• Nervous System Exam Quiz - 1

  This dendrite, however, is typically not myelinated like the axon. There are also frequently many dendrites, while a single axon is the typical rule. Different types of neural cells can carry different arrangements of dendrites depending on their function. Example Question 5 : Neurons And Action Potential Which component of a neuron is responsible for electochemically stimulating nearby cells? Possible Answers:.

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• Chapter 6: Multiple Choice Questions

  Where two neurones meet there is a small gap, a synapse. An electrical impulse travels along the first axon. This triggers the nerve-ending of a neurone to release chemical messengers called neurotransmitters into the synapse. These chemicals diffuse across the synapse the gap and bind with receptor molecules on the membrane of the second neurone. The receptor molecules on the second neurone bind only to the specific neurotransmitters released from the first neurone. This stimulates the second neurone to transmit the electrical impulse.

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  Sample question 3 — Higher Question The diagram shows a bee flying towards a man's eye. In the blink reflex, light from the bee reaches the light-sensitive cell in the eye. The muscles in the eyelid shut the man's eye before the bee hits the eye. Describe the pathway taken by the nerve impulse in the blink reflex. Explain why we have this reflex. Reveal answer down During this response, the 'nerve cell' will be accepted instead of a neurone. Her hand automatically moves away from the pan. The diagram shows the structures involved in this action. Describe fully how the structures shown in the diagram bring about this reflex action.

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• Nervous System Questions

  Questions presented here came from previous exams, and may test material not presented in this year's lectures. Answer The cochlea extracts frequency and intensity information from acoustic stimuli, but interactions among neurons in the central nervous system are necessary to localize sounds. Answer Neurons faithfully carry information about each sensory modality along specific parallel pathways, with none of the information being altered by other regions of the central nervous system. Answer Light results in the opening of sodium channels in the membrane of photoreceptor cells, resulting in a depolarization of the rod or cone. Answer Taste receptors use several mechanisms, including direct ion channel activation and receptors coupled to second messenger systems, to detect the presence of different tastant molecules. Answer Lateral inhibition is a mechanism whereby the nervous system narrows an area of sensation relative to the area of receptor activation.

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• 5.06: CPC Exam: The Nervous System

  Which of the following statements is FALSE: Answer during transduction of auditory stimuli, ion channels located at the tips of the stereocilia are mechanically opened, resulting in depolarization of the inner hair cell the tonotopic representation of frequency is passed from the lateral geniculate nucleus to the primary auditory cortex the main function of the middle ear is to match the impedance of air to the impedance of the fluid in the cochlea basilar membrane vibration is frequency dependent: high frequency sounds produce larger deflections in the base of the cochlea, and low frequency sounds in the apex.

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• Neurological Exam

  Explain the paradox inherent in the encoding of stimulus location and intensity, and provide a brief description of one mechanism used by the central nervous system to resolve this problem. Answer Outline the steps in the transduction process that occurs in rod cells, and indicate how this process contributes to the sensitivity of the visual system.

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• 5.2 The Human Nervous System

  Nervous System :Definition ,Quiz ,Questions ,Test Do you know how we understand something is hot or cold, something is sweet or bitter? It is our nervous system ,which control all our senses like taste,touch,see,smell etc. Nervous system controls all the actions of our body. Peripheral nervous system consist of many nerves ,which are spread through body. Our brain is most complicated organ of our body. Cerebrum is the biggest part of the brain. So whatever we see ,touch ,taste ,smell ,think or imagine is controlled by Cerebrum.

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• The Human Nervous System Quiz

  It controls our motion,balance or learning new thing. YOU can walk without falling because of Cerebellum. Also it helps to learn any new thing. It does few things which are called involuntary actions. It controls our digestion,heartbeat,breathing. These things happen automatically in our body ,we don't have to put any effort here. Peripheral Nervous system is made of many nerves ,which are present throughout the body.

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• 20 Items Neurological Nursing Exam 3: Nervous System

  The Peripheral nervous system has two functions- Some Nerves receive information like when you taste something,these messages are carried to the brain by these nerves. The nerves which take the message from senses to brain are called sensory nerves. Other nerves carry message from brain to the body ,these are are called motor nerves. They carry instructions from brain to the body on what action to take Like if eat a bitter chilly, your brain will tell you about the bitterness ;which may lead to action of spitting.

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• Quiz: Sympathetic And Parasympathetic Nervous Systems

  All of the above Where is simple squamous epithelium found in the kidney nephron or collecting duct? Thin segment of the loop of Henle B. Thick segment of the loop of Henle C. Distal convoluted tubule D. Proximal convoluted tubule E. Collecting duct Indicate the correct pathway in the flow of urine initially blood plasma many steps omitted : A. Choose the correct order of events many steps omitted in the pathway of sound vibrations: 1 Incus vibrates, 2 Malleus vibrates, 3 Oval window vibrates, 4 Round window vibrates, 5 Basilar membrane vibrates, 6 Perilymph of scala tympani vibrates, 7 Endolymph of scala media vibrates, 8 Tympanic membrane vibrates. The space that lies outside the outermost meninges of the spinal cord is called the A. Epidural space.

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• General Organization Of The Nervous System

  Store Sympathetic vs. This quiz will test your knowledge on the autonomic nervous system along with the medications pharmacology that either inhibit or stimulate these nervous systems. In the previous NCLEX review series , I explained about other neurological disorders, so be sure to check those reviews out. As the nurse, it is important to know how the nervous system works and the types of drugs that can be administered to either inhibit or stimulate the sympathetic or parasympathetic nervous system. Sympathetic vs Parasympathetic Nervous System Quiz This quiz will test your knowledge on the sympathetic nervous system vs. In addition, to the different types of drugs. True or False: The autonomic nervous system is unique because it has only one neuron that synapses in an autonomic ganglion.

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• Nervous System 5th Grade | Nervous System Quiz - Quizizz

  Hence it has only pregangolic neurons not postganglionic neurons. The sympathetic nervous system postganglionic neuron releases what neurotransmitter? Acetylcholine C. Both Acetylcholine and Norepinephrine D. Arginine 3. The sympathetic nervous system preganglionic neuron releases what neurotransmitter?

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• CPC Exam: The Nervous System

  Acknowledgements Quiz Test your understanding of key chapter concepts by working through this quiz. You can check your answer by clicking on the arrow to the right or on what you think the correct answer is. The correct answer will then be revealed for that question. The central nervous system consists of the brain and spinal cord brain stem and the cerebellum cerebrum and the spinal column Answer: a.

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• Multiple Choice Quiz

  Which is not a function of the cerebrospinal fluid? It protects the central nervous system It cushions the brain It fills the subarachnoid space It increases pressure at the base of the brain Answer: d. It increases pressure at the base of the brain 3. What is the primary purpose of the spinal cord? To facilitate the communication between the two hemispheres To produce hormones and neurotransmitters To transmit electrical signals between the brain and the rest of the body To transmit electrical signals around the brain Answer: c.

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• Nervous System MCQ Question With Answer

  To transmit electrical signals between the brain and the rest of the body 4. What is the purpose of the blood—brain barrier? It protects the peripheral nervous system It provides another layer of CSF It transmits electrical signals between neurons It supplies nutrients while preventing hazardous chemicals from reaching the brain Answer: d. It supplies nutrients while preventing hazardous chemicals from reaching the brain.

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• GCSE Nervous System Questions And Answers | Teaching Resources

  Find the program for you Search our directory of all medical billing and coding schools Compare Programs 5. The cerebral cortex of the brain has four lobes: the frontal lobe, parietal lobe in the middle toward the rear , the temporal lobe to the sides and occipital lobe at the rear. The brain is coated by three meninges: the pia mater, the arachnoid, and the dura mater. The pia mater is the soft casing closest to the brain itself. The arachnoid is the web-like intermediary in between the pia mater and the dura mater, and the dura mater is the hard outer layer in between the brain and meninges and the skull. The nervous system extends from the brain, down the spine and spinal column, and throughout the body in a network of nerves. You need to know the difference between an —ectomy cutting away and an —otomy cutting into. For example, the tentorium is the fold in the dura mater that creates a crease between the cerebrum the anterior, or front, section of the brain and the cerebellum the posterior, or back of the brain.

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• Nervous System Quiz - Health Encyclopedia - University Of Rochester Medical Center

  You may need to code a supratentorial craniectomy. You should also expect at least one question on surgical procedures performed on the base of the skull. This is a complicated area of surgery, one in which the approach is often more difficult than the removal or alteration of the problem there. Because the nervous system effectively encompasses the entire skull, surgical procedures on the nervous system are identified by where inside the skull they take place. Surgical procedures on the spinal cord are identified by where on the spinal cord they take place: A discectomy, for example, would be identified by where in the spine the disc is being removed. Is it between the first and second lumbar vertebrae? The second and third cervical vertebrae?

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• Quiz: Brain & Nervous System

  This may include the injection of diagnostic agents dyes, for example , treatments, or anesthesia. You need to be able to navigate the nervous system based on the location on the body. You should be familiar with surgical prefixes and suffixes. Note that in your CPT manual, you can find informative diagrams of the skull, spinal column, and nervous system. Make a master list of pages that feature anatomical diagrams and refer to them during the test in case you get stuck. This video will cover the nervous system portion of the CPC exam.

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• Sympathetic Vs. Parasympathetic Nervous System Quiz – Includes Pharmacology

  This article serves as a summary of CNS organogenesis as well as a review the framework of embryology, the embryogenesis of the brain and spinal cord, various tests that can be performed in utero to test for CNS anomalies, and problems that may be encountered during embryogenesis, with particular attention to the CNS. The CNS system involves 3 germinal layers: ectoderm, mesoderm, and endoderm. The ectoderm is the key initiating player in the embryogenesis of the CNS. The ectoderm is further sub-specialized as the 1 surface ectoderm, which differentiates into the epidermis, nails, and nervosu. The ectoderm is also sub-specialized to form the 2 neural ectoderm, which gives rise to the neural tube and neural crest, which subsequently give rise to the brain, spinal cord, and peripheral nerves. The endoderm gives rise to the lining of the gastrointestinal and wystem systems. It also gives rise to abdominal organs such as the liver, pancreas, and bladder. The mesoderm is differentiated into 3 parts: Paraxial mesoderm: This part of the mesoderm contains mostly somites which give rise to the axial skeleton, dermis, and muscle.

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• GK Questions And Answers On Nervous System

  Intermediate mesoderm: This part of the mesoderm gives rise to the gonads, kidneys, and urogenital structures. Lateral plate mesoderm is further classified into parietal mesoderm and visceral questioms, which give rise to the limb skeleton and muscular wall of the gut tube, respectively. Embryological Transformations Because these changes do not occur at once, embryology is a complicated subject. The following timing of embryological developments, with particular attention to the CNS, offers a greater understanding of the process. Weeks 1 to 3: Zygote formation, blastocyst, and gastrulation occur Mid-fourth week: Embryo is linear and uniform; notochord formation occurs Late-fourth week: Many forms of differential growth occur; upper limb buds always develop before the lower limb bud Fifth week: Limb buds more pronounced Sixth week: Can begin to see eyes and auricular nervvous, which will develop into the external ears Seventh week: Formation of eyes, ears, and fingers Late eighth week: Formation of all organ systems Nine to 12 weeks 11 to 14 gestational age fxam Embryo has a large head, and small body and this is the time where the body grows in an attempt to catch up with the limbs.

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• Quiz: The Autonomic Nervous System

  The genitalia can be recognized during this period giving a chance for parents to find out the gender of the embryo. Thirteen to 16 weeks 15 to 18 gestational age : Coordinated limb developments and ossification of skull occur; Ovaries differentiate and contain primordial ovarian follicles that contain oogonia; the eyes face anteriorly, and ears are in place. Seventeen to 20 weeks 18 to 22 gestational ages : Eyebrows and head hair visible at 20 weeks Twenty-one to 25 weeks 23 to 27 gestational age : Type II pneumocytes to secrete surfactant. It is after this stage when babies are considered viable. Twenty-six to 29 weeks 28 to 31 gestational age : Eyelids open; the quantity of white fat increases.

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• Interactive Tools

  The CNS has matured and can control breathing as well as temperature function. Additionally, the bone marrow takes over from the yolk sac as the nervous system exam questions site of erythropoiesis. Thirty to 34 weeks 32 to 36 gestational age : Maturation and growth of organs occur Thirty-five to 38 weeks 37 to 40 gestational age : Baby now has a firm grasp with hands. Testes may have descended in shstem. They also proliferate in the middle layer to form the mesoderm where it will remain mesenchymal to form connective tissue. The primitive streak then starts to appear superiorly from the thickened region of ectoderm. It grows caudal to cranial and induces the notochord formation.

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• The Nervous System Test Questions - WJEC

  The ectoderm then invaginates as cells migrate to form the primitive node and primitive pit where the notochordal process is formed. The primitive pit is a depression at the center of the primitive node, which is an opening in the notochordal canal. Neurulation nervous system exam questions to the folding of the neural plate. The neural plate folds, via induction from the notochord, into the neural tube, sysgem then becomes the neuroectoderm, which finally forms the CNS, namely the brain and spinal cord; the brain from cranial two-thirds of the segment and spinal cord from caudal one-third of the segment Neural Crest cells form dorsal root ganglia and connective tissue in the head and neck. Notochord: Forms nervous system exam questions of the intervertebral discs, and not the spinal cord or spine The notochordal process formed on top of the primitive node Elongation of the notochordal process occurs caudally and goes upward to the cranial end Sysyem CNS is derived from the neuroectoderm: notochord induces the formation of the neural plate thickening nervous system exam questions the ectodermal layerwhich further differentiates to form neural folds with a neural groove in between, leading to the formation of the neural tube via neurulation.

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• Nervous System Quizzes Online, Trivia, Questions & Answers - ProProfs Quizzes

  Spinal Cord Ssystem spinal cord is formed from the neural plate, now contains 3 layers: [3] [4] [3] Ventricular layer that lines the central canal Mantle layer that contains neuronal bodies, which will eventually form the gray matter Marginal layer that contains axons, and will eventually form the white matter While this article summarizes the embryological changes that occur within the CNS, the peripheral nervous system PNS is formed from neuroepithelial cells. These cells travel from the pia mater to the ventricular layer of the spinal cord, where they differentiate and migrate to form glioblasts for example, support cells, Schwann cellsneurons, and ependymal cells. As this information is often tested on boards, that myelin sheath, a sheath composed of support cells, wraps around axons and insulate neurons to increase the speed of neuronal conduction. Myelination ezam peripheral axons occurs via the neurolemma, which comes from Schwann cells which come from neural crest cells.

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• Questions In Multiple Choice Questions (MCQ)

  Myelination of CNS axons occurs via oligodendrocytes, which are neuroepithelium derivatives. Three membranous layers cover the whole CNS: Dura mater: derived from surrounding mesenchyme and is tough and durable. Arachnoid mater: derived from neural crest; forms as a single layer with Pia mater. Pia mater: derived from neural crest; intimately covers the CNS. Brain During brain formation, there are 3 primary brain vesicles that differentiate into 5 secondary brain vesicles. See image. Prosencephalon, which becomes the forebrain: This later develops into the cerebral hemispheres which contain structures underneath such as epithalamus, thalamus, nergous hypothalamus.

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• Neurological Disorders (Stroke, Seizures, CVA) NCLEX Practice Quiz (150 Questions)

  This section of the brain is responsible for consciousness, sensorimotor transformation, and sensory integration. Mesencephalon, which becomes the midbrain: This part of the brain undergoes little structure reorganization compared to the spinal cord and other brain vesicles. Finally, the hypophysis gives rise to the pituitary gland, which has 2 nervous system exam questions. Questios posterior pituitary is an outgrowth of the hypothalamus, and, therefore, has a direct connection.

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• Quiz: The Nervous System – Exam

  On the other hand, the anterior pituitary is an ectodermal growth from the mouth. It depends on a dense capillary network and communicates with the brain via the vascular system. This tests for cell-free DNA in plasma of pregnant women and helps identify certain anomalies or diseases. Amniocentesis, which is usually performed between 14 and 20 weeks, is the sampling of the amniotic fluid to screen for fetal anomalies. This is a diagnostic test. First-trimester testing looks for risk of trisomy 21, trisomy 18, trisomy 13, and other neural tube defects. Alpha-fetoprotein AFP is a hormone that is elevated in amniotic fluid in anomalies of the Nervous system exam questions and ventral abdominal wall. It is decreased when the fetus has trisomy 21, trisomy 18, or other chromosomal defects. Anatomy sonogram can be performed throughout pregnancy, but particularly between weeks 16 to 22 to estimate the fetal weight and gestational age using measurements from: Head circumference Femur length from epiphysis to epiphysis Abdominal circumference Although beyond the scope of this article, there is also a Quad-screen test which can be performed in the questioons trimester.

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• Embryology, Central Nervous System Article

  Teratogenesis is defined as any external factor that can influence the growth of the embryo. Embryos are highly susceptible and critical between weeks 3 and 8 because that is when organ systems develop. Dysraphism is the failure of fusion between symmetric halves of an anatomical structure. These include, and are not limited to, ysstem bifida malformations. Spina bifida occulta occurs when the vertebral column fails to fuse, but other layers develop normally. It is the least severe form of dysraphism and usually affects the lumbosacral region S1 to S2 most commonly. It can be associated with moles, angioma, lipoma, and abnormal hair growth in the area of abnormality. Spina systwm aperta occurs when there is an incomplete fusion of skin with or without a cyst. The questioms cord is still covered by the arachnoid mater, thus preserving subarachnoid space and preventing leakage of the CSF.

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• The Human Nervous System: Year 9 Science Quiz | Studiosity

  Spina bifida cystica is the most severe form of dysraphism. Patients may develop urinary or fecal incontinence. Dysraphism in the cranium causes malformations analogous to spina bifida [8] : Encephalocele: Protrusion of the brain into the subarachnoid space. It can be associated with Chiari III malformation during part of the cerebellum protrudes, and the spinal cord gets twisted. This is commonly associated with cleft lip and palate. Anencephaly is where the cerebral cortex and thalamic structures are generally absent, but the cerebellum, brainstem, and spinal cord are present but may be deformed. This can occur due to the failure of notochord signaling which is necessary for median hinge point formation or induction of neural crest cell maturation. Holoprosencephaly: Failure of features to form along the midline of the face. Features include single central incisor, cyclopia, or unpaired cerebral hemisphere.

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• Neurological Exam: MedlinePlus Medical Test

  Craniorachischisis totalis is when the entire neural plate fails to fold, and CNS is open to the amniotic cavity. These are often associated with still-born fetuses. Clinical Significance Pathophysiological processes that can occur during embryogenesis are rare and do not occur very often, and when they do, the newborn questins alive and not stillborn. However, the newborn may require certain surgeries to correct the craniofacial anomalies before significant damage occurs. Clinically speaking, to avoid the abnormal embryological development, the mother should abstain from teratogens or any external factor that can influence the growth of the baby, especially during weeks 3 through 8 of the embryogenesis. Significant teratogens include alcohol, tobacco use, certain prescription drugs, and illicit drugs.

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